[elecena] Educational Active Buzzer - with 4mm Banana Posts - SFM-27 - zmiany ceny Loud SFM-27 buzzer with a supply voltage of 3-24V generates continuous sound of approx. 95dB with a frequency of approx. 3kHz. This buzzer comes mounted on a stand with 4mm banana posts to facilitate easy and quick connections.Technical data:Operating voltage: 3 to 24V (the higher the voltage is, the louder is the sound) Rated current: 30mA Sound level: above 90dB Resonance frequency: 3000 ~ 500Hz Working temperature: -30C - + 80C Dimensions: 75 x 30 x 24 mm Banana posts spacing: 53mm Educational Active Buzzer - with 4mm Banana Posts - SFM-27 - 8.09 EUR https://elecena.pl/product/29429812/educational-active-buzzer-with-4mm-banana-posts-sfm-27 2025-10-15 Educational Active Buzzer - with 4mm Banana Posts - SFM-27 - 9.95 EUR https://elecena.pl/product/29429812/educational-active-buzzer-with-4mm-banana-posts-sfm-27 2025-10-29